\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Extremism: positive appeals (Study I)}
\begin{tabular}{l*{9}{c}}
\hline\hline
                &\multicolumn{1}{c}{Pooled: positive}&\multicolumn{1}{c}{Artists}&\multicolumn{1}{c}{Disabled people}&\multicolumn{1}{c}{Families}&\multicolumn{1}{c}{Homosexuals}&\multicolumn{1}{c}{Senior citizens}&\multicolumn{1}{c}{Police officers}&\multicolumn{1}{c}{Rural residents}&\multicolumn{1}{c}{Women}\\
\hline
Group appeal    &    0.096\sym{***}&     0.17\sym{*}  &     0.66\sym{***}&     0.55\sym{***}&    -0.31\sym{***}&  -0.0100         &     0.69\sym{***}&    -1.03\sym{***}&   -0.011         \\
                &   (0.03)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         \\
Group-policy appeal&    0.098\sym{***}&     0.20\sym{**} &     0.37\sym{***}&     0.14         &    -0.20\sym{*}  &    0.028         &     0.30\sym{***}&    -0.12         &     0.11         \\
                &   (0.02)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         &   (0.08)         \\
\_cons          &     2.96\sym{***}&     1.95\sym{***}&     2.68\sym{***}&     2.66\sym{***}&     3.14\sym{***}&     3.47\sym{***}&     2.59\sym{***}&     3.26\sym{***}&     3.29\sym{***}\\
                &   (0.03)         &   (0.05)         &   (0.05)         &   (0.06)         &   (0.06)         &   (0.05)         &   (0.06)         &   (0.06)         &   (0.06)         \\
\hline
Observations    &    25200         &     3150         &     3150         &     3150         &     3150         &     3150         &     3150         &     3150         &     3150         \\
FEs respondents &      Yes         &                  &                  &                  &                  &                  &                  &                  &                  \\
FEs groups      &      Yes         &                  &                  &                  &                  &                  &                  &                  &                  \\
Respondents     &     3150         &                  &                  &                  &                  &                  &                  &                  &                  \\
R\textsuperscript{2}&    0.070         &   0.0025         &    0.023         &    0.016         &   0.0044         & 0.000087         &    0.023         &    0.061         &  0.00091         \\
\hline\hline
\multicolumn{10}{l}{\footnotesize Note: Standard errors in parentheses.}\\
\multicolumn{10}{l}{\footnotesize \sym{*} \(p<0.5\), \sym{**} \(p<0.01\), \sym{***} \(p<0.001\)}\\
\end{tabular}
\end{table}
